ABB RELION REX640 - 4.5.10.2 Function block; 4.5.10.3 Functionality; 4.5.10.4 Analog channel configuration

4.5.10.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Three-phase overvoltage variation
protection
PHVPTOV 3Urms> 59.S1
4.5.10.2 Function block
Figure 511: Function block
4.5.10.3 Functionality
The three-phase overvoltage variation protection function PHVPTOV monitors the
quality of the voltages. The function evaluates the power quality in the voltage by
calculating the average RMS value of the voltage over a set period. The function
includes a settable limit for the detection of overvoltage in a single phase, two
phases or three phases.
The function starts when the average RMS value of the voltage exceeds the set limit.
PHVPTOV operates with the definite time (DT) characteristics.
The function contains a blocking functionality. It is possible to block function
outputs, the definite timer or the function itself.
4.5.10.4 Analog channel configuration
PHVPTOV has one analog group input which must be properly configured.
Table 870: Analog inputs
Input Description
U3P Three-phase voltages
See the preprocessing function blocks in this document for the possible
signal sources.
There are a few special conditions which must be noted with the configuration.
Table 871: Special conditions
Condition Description
U3P connected to real measurements The function can work with one voltage chan-
nel connected if Num of start phases is set
to "1 out of 3". Otherwise, all three voltage
channels must be connected.
Protection functions 1MRS759142 F
914 REX640
Technical Manual